![]() ![]() Interested in finding out what blood type you are?ĭon’t know your blood type? We’ll test your blood when you donate and let you know your type. If the Rh factor protein isn’t present, the person is Rh negative. If the Rh factor protein is present, the person is Rh positive. The Rh factor is a protein on the covering of red blood cells. While having O negative blood makes you a universal blood donor, it also means that if you need blood, you can only be transfused with O negative blood. The most common type of blood type incompatibility is Rh disease (also known as Rh incompatibility). Not only will you help save lives, but you’ll also ensure there’s a good supply of O negative available should you need blood. If you have O negative blood and are able to donate, we encourage you to do so. What does this mean for those with O negative blood? O negative blood may not be the rarest blood type, but may be critical to a victim’s survival in an emergency. When trauma victims need urgent treatment, there is seldom time to test their blood type, so O negative blood is used. Antigens are markers on the surface of a. In addition, emergency services, including ambulances and helicopters, may also carry it to keep patients alive while they’re being transported to a hospital. If your blood is A positive (A+), it means that your blood contains type-A antigens with the presence of a protein called the rhesus (Rh) factor. Hospitals need to have it on hand for emergencies. O negative blood is valuable because it can be transfused to anyone, regardless of their blood type. If O negative isn’t that rare, why do blood centers and hospitals always need it? The A negative blood type is only present in about 1 out of 16 individuals. Fewer than 50 people in the entire world population are known to have Rh-null blood. Rare Blood Type It is very important to maintain sufficient supply of this blood type for it is rare. However, the rarest blood type in the world is Rh-null, which is so rare most of us have never heard of it. Is that rare? Only about 1 in 67 have B negative blood, making it rarer. ![]() Or to put it another way, about 1 in 15 people have O negative blood. If you have 0 negative blood, you have something in common with about 7 percent of the US population. If you mix blood from two people with wrong blood types, the antibodies in the blood of the person receiving the transfusion will fight the cells of the donor’s blood, resulting in a potentially fatal toxic reaction.People with O negative blood often wonder how rare their blood is since it is always in demand by hospitals and blood centers.
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